715495981 has 4 divisors (see below), whose sum is σ = 715549852. Its totient is φ = 715442112.

The previous prime is 715495951. The next prime is 715495987. The reversal of 715495981 is 189594517.

715495981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 189594517 = 7 ⋅27084931.

It can be written as a sum of positive squares in 2 ways, for example, as 65755881 + 649740100 = 8109^2 + 25490^2 .

It is a cyclic number.

It is not a de Polignac number, because 715495981 - 2²⁵ = 681941549 is a prime.

It is a super-2 number, since 2×715495981² = 1023868997654304722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (715495987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8725 + ... + 38821.

It is an arithmetic number, because the mean of its divisors is an integer number (178887463).

Almost surely, 2^715495981 is an apocalyptic number.

It is an amenable number.

715495981 is a deficient number, since it is larger than the sum of its proper divisors (53871).

715495981 is a wasteful number, since it uses less digits than its factorization.

715495981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53870.

The product of its digits is 453600, while the sum is 49.

The square root of 715495981 is about 26748.7566253088. The cubic root of 715495981 is about 894.4081190099.

The spelling of 715495981 in words is "seven hundred fifteen million, four hundred ninety-five thousand, nine hundred eighty-one".